Photo-Sensitive Sensing Cover Heating and Piezoelectric Cleaning
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Solution Overview
Problem
Existing optical detection systems face issues with foreign substance contamination on observation windows, leading to signal degradation, and current vibration-based cleaning methods face challenges with energy consumption, heat accumulation, and reduced vibration ability, especially in applications requiring rapid cleaning.
Innovation Solution
A heating enhanced structure for photo-sensitive sensing devices using a flexible and rigid sealing material to transmit vibrations from a piezoelectric element, combined with a heating element to vaporize small liquid droplets, while maintaining effective foreign object removal and minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency vibration is used to remove foreign substances, then foreign object removal efficiency is improved, but energy consumption increases and heat accumulation occurs
Solution Approach 1:
The invention divides the cleaning function into two separate mechanisms: a piezoelectric element for vibration-based foreign object removal and a heating element for liquid droplet evaporation. This segmentation allows each component to operate at optimal parameters without the energy waste of using high-frequency vibration for all types of contaminants.
Solution Approach 2:
The invention changes the operating parameters by using low-frequency vibration from the piezoelectric element combined with controlled heating, rather than relying solely on high-frequency vibration. This parameter change reduces energy consumption while maintaining effective cleaning performance for different contaminant types.
2Productivity
If high-frequency vibration is used to vaporize liquid droplets, then cleaning effectiveness is improved, but heat accumulation damages the piezoelectric element
Solution Approach 1:
The invention separates the liquid droplet removal function from the piezoelectric element by introducing a dedicated heating element. This segmentation protects the piezoelectric element from heat damage while maintaining effective liquid droplet removal through thermal evaporation.
Solution Approach 2:
The invention replaces the mechanical vibration method with a thermal method for liquid droplet removal. Instead of using high-frequency vibration to vaporize droplets, a heating element is used to provide controlled thermal energy, eliminating the risk of piezoelectric element damage from heat accumulation.
3Reliability
If soft sealing material is used to seal the optical detection system, then waterproof level is improved, but vibration transmission ability deteriorates
Solution Approach 1:
The invention uses a composite sealing structure combining soft sealing material for waterproofing with a rigid housing structure for vibration transmission. The soft sealing material (such as O-ring) provides the necessary seal, while the rigid housing and mounting structure ensure effective vibration transmission from the piezoelectric element to the observation window.
Solution Approach 2:
The invention introduces a rigid housing structure as an intermediary between the soft sealing material and the piezoelectric element. This intermediary transmits vibrations effectively while allowing the soft sealing material to maintain the waterproof seal, resolving the contradiction between sealing effectiveness and vibration transmission.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The structure efficiently removes foreign substances and small liquid droplets with reduced energy consumption and heat-related degradation, ensuring consistent performance in environments with complex contaminants.
Implementation Method 1
a piezoelectric element provided on an edge of the transparent protective cover in the internal space of the photo-sensitive sensing device; the piezoelectric element performs vibration, and the vibration is transmitted to the transparent protective cover through the sealing material to remove foreign substances from the transparent protective cover
Implementation Method 2
a heating element provided between a lateral side of the transparent protective cover and the sealing material; the heating element generates heat energy, and the heat energy is transmitted to the transparent protective cover through the sealing material to remove small liquid droplets from the transparent protective cover
Data Source
AI summary
The present invention relates to a heating enhanced structure for a photo-sensitive sensing device with automatic foreign object removal, particularly involving the use of a structure made of flexible and rigid materials for sealing the photo-sensitive sensing device and transmitting vibrations generated by piezoelectric elements. The photo-sensitive sensing device includes a housing, a transparent protective cover, a photo sensor, a lens module, a sealing material with flexibility and rigidity, and a piezoelectric element. The device is further equipped with a heating element to optimize the automatic foreign object removal function, reduce the frequency of piezoelectric element usage, thereby lowering power consumption, extending the operational lifespan, and improving the efficiency of removing small liquid droplets.